Qian Ge, Hou Ligong, Guo Wu
Department of Dermatology, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China.
Department of Medical Education, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou, China.
JAMA. 2019 Feb 12;321(6):604-605. doi: 10.1001/jama.2018.20666.